package com.example.dao;

import com.example.pojo.Department;
import org.springframework.stereotype.Repository;

import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
@Repository
public class DepartmentDao {

    private static Map<Integer, Department> departments = null;

    static {
        departments = new HashMap<>();
        departments.put(101, new Department(101,"市场部"));
        departments.put(102, new Department(102,"教学部"));
        departments.put(103, new Department(103,"教研部"));
        departments.put(104, new Department(104,"开发部"));
        departments.put(105, new Department(105,"后勤部"));
    }

    public Collection<Department> selectAll(){
        return departments.values();
    }

    public Department selectById(Integer id){
        return departments.get(id);
    }

}
